Many wannabe actors and struggling musicians dream of the day they will be "discovered." And while for the majority it is truly a one in a million chance that someone will suddenly walk into a person's life and decide they are entertainment's next best thing, for some top celebrities, it really did happen this way!

Click through the interesting gallery to learn about the unconventional ways your favorite stars were discovered.

Charlize Theron - This actress was discovered when she standing in line and threw a fit when a bank teller would not cash a check she desperately needed. Her antics caught the attention of a talent agent who left her his business card.

Rihanna - Rihanna was just a small island girl living in Barbados when she happened to score an audition with record producer Evan Rogers who was vacationing there. She later went off to meet Jay-Z and landed a record deal with Def Jam.

Harrison Ford - The actor was actually working as a carpenter in the offices where the casting call for 'Star Wars' was being held. Producer and friend of Ford, Fred Roos, believed he'd be perfect for the role of Han Solo. Ford auditioned and landed the part.

Shawn Mendes - Another singer who was discovered on social media is the talented Shawn Mendes, who would post videos to Vine. He quickly gained a massive following and eventually caught the attention of artist manager Andrew Gertler, who brought him to Island Records.

Pamela Anderson - The Canadian beauty was attending a football game when she suddenly saw herself on the jumbotron and the crowd went wild for her. She was wearing a Labatt's Beer T-shirt and was later hired to do some modeling for them.

Ashton Kutcher - Kutcher was spotted inside a bar and convinced by a scout to enter a modeling competition which he ended up winning. He went on to do modeling jobs for Calvin Klein, and jobs in Milan and Paris before breaking into acting.

Kate Upton - Although Upton had already been discovered at a model casting call a few years earlier, her popularity skyrocketed after a friend posted a video of her doing the Dougie dance on YouTube in 2011 and it went viral. This helped her become a household name.

Mel Gibson - Similarly, a beat-up Gibson was just accompanying a friend to an audition. Gibson had been in a bar fight the night before and he caught the attention of the director who liked his look. When he returned a week later, the director decided to cast him in the lead role for the film 'Mad Max.'

Channing Tatum - A good-looking Tatum was just walking down the street of Miami when he was spotted by a model talent scout. He started modeling for brands such as Armani, and even did a few commercials.

Sofia Vergara - A relaxing day at the beach turned out to be a lucky day for this Colombian beauty when she was discovered by a photographer. At the time, she was in university studying to become a dentist but dropped out to pursue modeling and acting.

Jennifer Aniston - A desperate Aniston approached NBC President Warren Littlefield at a gas station to ask for advice on her acting career. He encouraged her to keep going and eventually was the person who helped land her the role of Rachel on 'Friends.'

Natalie Portman - Portman was discovered inside a pizzeria as a kid. She was enjoying a gooey slice when she was spotted by a Revlon modeling agent, but she was adamant she wanted to act. Proof that Portman is perfect even while eating a messy slice of pizza!

Nick Jonas - If it had not been for Nick, the world would not have got to know his other brothers, Joe and Kevin. It was Nick who was heard singing outside of a salon at the age of 6, while he waited on his mom who was getting a haircut.

Chris Pratt - Like most struggling actors trying to make it, Pratt was waiting tables hoping for his big break. Luckily for him it actually happened! A film director walked in, complimented him on his looks, asked if he was an actor, and before he knew it, a mere four days later he found himself in Los Angeles.

Evangeline Lilly - The 'Lost' actress was approached by a Ford Modeling Agency agent while walking down a street. Although she had no interest in modeling, she eventually signed with the agency to help pay for her school tuition.

Danny DeVito - According to ClickHole, James L. Brooks, co-creator of 'Taxi,' already had a very specific look in mind for the role of Louie De Palma. He drew a sketch and told his assistant to find him someone that looked like that...and DeVito was found!

Haley Joel Osment - The former child star was discovered in IKEA, of all places. Two casting ladies were taking Polaroids of young kids that entered the store. Shortly there afterwards, he started getting calls for kids' commercials.

Danny Trejo - After serving time in prison, the Mexican-American actor became a drug counselor to help young people with their addiction. One patient asked Trejo to visit him on the set of 'Runaway Train.' He was offered a role in the film and the rest is history.

Adrienne Houghton - This New Yorker was discovered by Latin sensation Ricky Martin, if you can believe it! He was looking for backup singers and asked a church choir for the best four singers to perform with him at a show that evening...and Houghton was chosen.

While in school, he was invited to sing on stage with salsa singer Gilberto Santa Rosa, at the urging of his classmates. Santa Rosa was not only impressed with the young boy's vocal chops, but also with his ability to freestyle with his lyrics.

The surprising ways stars were discovered

Some lucky celebs were just at the right place at the right time

Many wannabe actors and struggling musicians dream of the day they will be "discovered." And while for the majority it is truly a one in a million chance that someone will suddenly walk into a person's life and decide they are entertainment's next best thing, for some top celebrities, it really did happen this way!

Click through the interesting gallery to learn about the unconventional ways your favorite stars were discovered.